Toshiba e-Studio 4515AC
Troubleshooting. Image 6. Moire /lack of sharpness
Moire
| Cause/Section | Step | Check item | Measures |
|---|---|---|---|
| Density reproduction | 1 | Check the gradation reproduction. | Perform the forced performing of image quality closed-loop control (FS-05-2742) and then automatic gamma adjustment |
| Parameter adjustment value | 2 | Check the image processing parameters. | Check the sharpness adjustment value. |
| 3 | Adjust the image processing parameters. | While checking the above encircled images A and B, decrease moire by sharpness adjustment. | |
| Printer section | 4 | Check the printer output image. | Output the test patterns and check them. Using FS-04-36 for each color. When defects occur, perform the corresponding troubleshooting procedures. |
Lack of sharpness
| Cause/Section | Step | Check item | Measures |
|---|---|---|---|
| Density reproduction | 1 | Check the gradation reproduction. | Perform the forced performing of image quality closed-loop control (FS-05-2742) and then automatic gamma adjustment. |
| Parameter adjustment value | 2 | Check the image processing parameters | Check the sharpness adjustment value. |
| 3 | Adjust the image processing parameters. | While checking the above encircled image A, increase sharpness by sharpness adjustment. |
* If the trouble is not solved at the step 1 and the step 2 or followings (excluding the parameter adjustment) are performed, make sure to perform “Enforced performing of image quality closed-loop control” and then “Automatic gamma adjustment” after taking a measure.